i understand governor romney went shopping for some stores in midtown. it's great to be here this evening in the vast magnificent hilton ballroom, or what mitt romney would call a little fixer-upp fixer-upper. >> you got to admit, no matter what side of the line you sit on, those are pretty funny. those are more than just funny lines. my guest wrote an op-ed for cnn.com on obama's "weaponized wit." obama didn't invent the political jab, but the president has taken the art form to a whole other level to take on rivals. dean's live for us in new york. dean, what is it? why do you think obama's become such a good